Gas burner



Feb. 2 1926.

E. E. WANN GAS BURNER Filed Dec 29,

1924 2 Sheets-Sheet WITNESSES ATTORNEYS Feb. 2 1926.

E. E. WANN GAS BURNER Filed Dec. .29, 1924 2 Sheets-Sheet lNVENTOR E. MAN/v WITNESSES ATTORNEYS Patented F eh. 2,

' ultimo-sures.

EUGENE ELTON wamw, or nnanronn rnnnsnvanmr easnummn.

Application filed December 29,1924. SrialHo. 758,686.

To all whom it may concern."

Be it known that I, EUGENE E. Warm, a citizen of the United States, and resident of Bradford, in the county ofMcKean and State of Pennsylvania, have invented certain new and useful improvements in' Gas.

Burners, of which the following is a specification. r I My invention relates generally to improvements in gas burners, more particular.-

ly to gas burners for cooking stoves, and it consists in the combinations, constructions and arrangements herein described and claimed.v Y An object of the invention is to rovide a burner of the character descri which is adapted to be supported in an opening or eye ofa stove top, oven bottom or the like beneath a heat resulting from the consumption of a iven' amount of gas through the use of the fiurner will be used to heat an article that rests upon the grid.

A further .object of the invention is the provisionof a burner of-the character described which afi'ords. facilities for preheating air and for deliverin the preheated air to the flame, from the urnr to support combustion so that practicall complete consumption of the gas issuing rom the burner .orifices will be effected.

A further object of the invention is the p provision of a burner of the character described which affords facilities for concentrating the heat resulting from the use-0f the burner within a space of limited area ad-v 'jacent to the burner and for excluding excess air from said space. V I

Other objects and advantages of the inventionwill be apparent from the followin description, considered in conjunction p .wi h the accompanying drawing, in which Figure 1 is a vertical section through a burner embodying the invention and through I ,a fragmentary portion of a stove top having an eye in which the burner is supported, a fuel mixer and supply conduit for the burner being shown partly in. section and partly in side elevation,

Figure 2 is a plan view of the structure exhibited in Figure 1 with the stove top broken away to disclose the outer end of the mixer section of the fuel supply conduit, the grid shown in- Fig. 1 being omitted,

Figure 3 is a View similar to Figure 1,

grid so that practically all..the-

-. showing a burner embodying the invention together with heat deflecting plates 1n apphed position with respect to an eye or openlng-in the bottom of an oven.

Figure 4 is a sectional plan view ofthe structure exhibited in Figure 3 with portions of the heat deflecting plates broken away. 3 Y

Aburner embodying the invention as exhibited in F1 ures 1 and 2 comprises a hollow body 1 Wll0h is shown as be' circular in cross sectional contour and as aving'a top 2 and a bottom 3. The space or chamber within the burner body between the top 2 and the bottom 3 is indicated at 4 and con-t stitutes a fuel receiving and distributing chamber to which agaseous fuel may be supplied through a central opening in the liottom 3; the latter being provided with a tubular extension 5 depending from said central 1 opening and being provided with internal screw threads for engagement with the threads on a short nipple 6 which constitutes a section of thefuel supply conduit..'

The fuel supply conduit also comprises an elbow 7 which is secured at one end to the short nipple '6. A short lengthof tubing 8 has an end portion in threaded engagement with the outer end portion of the elbow 7. Atubular mixer section of'the supply conduit is indicated at 9 and has an end ortion thereof slidably fitting in the outer end of the tubular section 8, the engagement of the lapped portions of the tubular sections 8 and 9 being such that escape of gas between these sections is 'revented and at the same time relative axia movement of the sections is permitted within certain limits. The mixer section 9 enlarges toward .its outer end as best'seen in Figure 1 and is rovidedat its outer end with an integral head 10 formed with a central ope 11 for a gaseous fuel and with other ports mdicated at 12 which are located in a circle concentric with the o enings 11. A cap 13 fits on the head 10 an retains a rotaryvalve 14 flatwise againstthe outer face 'ofthe'hea'd 10.

- The cap 13 and the rotary valve 14 have central openings 15 and 16 respectively in 105 register with each other, the opening 16 also being in register ,with the central opening 11 of the head 10. A fuel delivery pipe, not shown, may have an end portion thereof arranged to discharge fuel into'the alined openings 16, 15, 11 so that gaseous fuel will flow from the fuel delivery pipe into the mixer section 9 of the hereinbefore mentioned fuel supply conduit for the burner. The cap 13 also has openings 18 corresponding in number and arrangement with the ports 12. The valve 14 has openings 19 corresponding in number and relative arrangement with the ports 12 and also with-the ports 18. A handle extension 20 protrudes through a slot 21 in the apron portion of the cap 13 tromthe valve 14 and can be manipulated to turn the valve member 14: within the cap 13 to position the openings 19 in partial or complete resgister with the corresponding openings 12 and 18 or to position the opening 19 of the valve entirely out of register with the corresponding openings 12 and 18 so that the volume of air permitted to pass through corresponding openings 18. 1 9 and 12 to mingle with the gaseous fuel in the mixer section 9 can be varied within a considerable range and air can be prevented from passing through the openings 12 into the mixer tube when desired.

The body 1 is formed to provide one or more series of ducts or tuyeres which ex tend vertically through the body 1 and of course through the fuel receiving and distributing space within the body 1, each of the tuyers being in open communication at its lower end with the space beneath the body 1 and at its upper end with the space above the top 2 of the body 1.

In the form of burner body exhibited in Figures 1 and 2, two circular series of spaced tuyeres 22 and 23 respectively are provided.

' Each tuyere 22 and each tuyre 23 decreases uniformly in cross sectional area from its lower to its upper end as clearly shown in Figure 1. The top 2 of the burner body is formed with a plurality of burner orifices 24 through which gaseous -tuel may pass from the gaseous fuel receiving and distributing space 4 which is within the body 1 to the space above the top 2' of the body. The burner orifices 24 preferably are arranged in circular series concentric with the series of tuyeres, the orifices 24 of each series heingspaced equidistant and there. being a circular series of the orifices 24: inwardly "from the inner series of tuyeres 22, another circular series of burner orifices 24 located between the two concentric series of tuyeres, and still another circular series of burner orifices 24 located outwardly from the outer series of tuyeres 23.

The body 1 is formed with an endless flange 25 which extends outwardly and upwardly from the marginal portion of the top 2 of the body. The flange 25 is provided at its upper end with an outwardlv extending annular lip 26 adapted to fit in a seat 27 at the upper end of an opening or eye 28 in a. stove top 29, whereby the body 1 will lies the top 2.

nausea ing an outer ring 31 fitting in a groove 31 in the stove top will be disposed in spaced parallel relation to the plane of the top 2 and a combustion chamber indicated at 32 will be defined by the top 2, the flange 25 and the portion of the grid 30 which overl rom the foregoing description of the various parts of the device, the operation thereof may be readily understood. Gaseous fuel passes into the mixer section 9 of the supply conduit and iningles with air which is admitted to the mixer section 9 through the openings or ports 12 if the ports or openings 12 are not completely covered by imperforate portions of the valve 14. The bore of the mixer section 9 decreases in cross sectional area. from its outer end for part of its length as clearly shown in Figure 1 so that the air and gaseous fuel which enters the mixer section at the outer end of the latter will be thoroughly and intimately commingled during the passage of such air and gaseous fuel through the mixer section. The fuel mixture will ass through the nipple 6 into the fuel receiving and distributing space l in the burner body and will fill the space 4, thus completely surrounding the tuyeres 22 and 23. Air for supporting combustion of the gaseous fuel which it is understood will be ignited when emerging from the burner orifices 24 into the combustion chamber 32 will enter the tuyeres at the lower end of the latter. The velocity of the currents of air passing through the .tuyeres vertically through the burner body will increase bccause of the decrease of the tuyeres in cross sectional area toward their upper ends and after the burner is in operation will be heated during passage through the tuyeres since the walls of the tuyeres will be heated by the flame in the combustion chamber. It will be understood that the number of burner orifices the relative position of the several burner orifices and the area of each burner 'orifice, as well as the number and relative arrangement of the several tuycres and the capacity of the tuyeres may vary ac-- cording to the size of the burner body, also according to the ratio of air for supporting combustion to gaseous or fuel mixture that is desired the character of the particular gaseous fuel that is used and like factors without departing from the spirit and scope of the invention. It is desirable that sufficient air be supplied to the gaseous fuel passing from the burner orifices 24 into the combustion space 32 to insure practically complete combustion. At the same time, it is intended that the supply, of air entering the combustion space 32 should not be sutficient to cause an excess of air which would mili late against complete consumption of the gaseous fuel and would permit waste of heat.

Since the inner wall of the flange 25 is contral portion of the grid 30 against the bot-' tom of any vessel. (not shown) which may rest upon thegrid 30 above .the combustion space. This concentration of heat insures the utilization of practically all the heat resulting from the combustion of a given volume of gaseousfuel in the combustion space in the heating of a vessel which is resting upon the grid the heat-passing radially outward against the bottom of the vessel between-the bottom of the vessel and the upper end of the inner end of the flange 25. and then upwardly along the-side walls of the vessel.

Figures 3 and 4 show a burner embodying the same invention as that. hereinbefore de-'- scribed but applied to an opening 40 in the bottom Walt-41 of an-oven 42. "The form of burner exhibited in Figures 3 and 4 is identi cal in essential respects with the form of burner hereinbeforedescribed and includes'a body 1 which is hollow and has a top 2 and a bottom 3 the gaseous fuel receiving and distributing space'within the burner 1 being indicated aft 4?. The burner body 1 differs from the burner body 1 in that the burner body 1 is provided with three concentric circular series of spaced tuyeres 33, 34 and 35 respectively, while thehereinbefore describedburner body 1 has only two circular series of tuyeres. However, each tuyere 33 34 or 35 is similar to each tuyere 22 or 23. The body 1 is formed with a central opening in the bottom in which is secured anend portion of a gaseous fuel supply pipe indicated generally at 36; Spaced burner orifices 24 are formed in the top 2 of the burner body 1 and an. outwardly and upwardly curved continuous flange 25* is integral with the marginal edge portion of the top 2 of the burner body 1 and is provided at its upper end with an outwardly extending lip 2.6 adapted to -fit in a seator socket 27 at the upper end of the opening 40, whereby the burner body will be supported in the opening 40.

A grid 30 rests uponthe oven bottom in" covering relation to the opening 40 and has the outer base ring thereof, indicated at 31 disposed in the groove 41 in the upper wall of the oven bottom, the inner base ring of the grid being supported at the 11 per end of the combustion space 32 of the urner.

A circular heat deflectingpla-te 37 which is imperforate rests upon the rid 30 above the combustion space 32 and is of suflicient diameter to extend radially outward beyond the outer edge of the lip 26 when the heat deflecting plate 37 is arranged on the grid are illustrated in the accompanying with the center of the heat deflecting plate in vertical alignment with the vertical axis of the burner body. A-second imperforate heat deflecting plate or baffle 38 conforms in outlineto the-cross sectional contour of the inner wall of the oven and is formed with supporting projections 39 depending from its lower face 'for'supporting the plate 38 upon the plate 37 in spaced parallel relation to the latter, the arrangement of the plate-38 on the plate 37 being such that the marginal edge of the plate 38 is uniformly spaced at all points along its perimeter from the inner wall of the oven.

Heat resulting from the combustion of gaseous fuel mixture within the combustion space 32 will'pass upwardly through the grid against the deflecting plate 37 and outwardly beyond the latter, then against the upper heat deflecting plate 38 and outwardly and upwardlybetween the edge ofthe heat deflecting plate 38 andthe inner wallof the oven. It thus will be manifest that such heat will be uniformly distributed throughout the space within the oven. A vessel, not shown, can be heatedwithin the oven simply by removing the plates 37 and 38 I and placing the vessel upon the grid 30.

Obviously, the invention is susceptible of embodiment in forms other than those which drawings, and I therefore consider as my own all such modifications and adaptations thereof as fairly fall within the scope of the appended. claims.

I claim 1. A burner of the character described I comprising a hollow -bod having spaced top and bottom walls an having an inlet opening in its bottom wall adapted for connection with a source of gaseous fuel supply, saidburneLbQd) having a lurality'of.

spaced fuel discharge orifices in its top wall and also having a plurality of air ducts ex tending vertically between the'to and bottom Walls ofthe body, said air ucts opening at their upper ends through said top '2. The combination with a substantiallyhorizontal supporting, plate having an openin}; formed with a circular seat at its up er end, of a burner body-having a gaseous uel receiving and distributing space therewithin and having an inlet opening in its bottom gaseous fuel supply and a plurality of spaced gaseous fuel discharge orifices in its top, said burner body having an outwardly and upwardly extending continuous flange substantially fitting in said opening in the adapted for connection with a source of 1 i supporting member and having an outwardly extending hp at its upper end adapted to engage with said seat, a grid supported on said supporting plate above said opening in the supporting plate, an imperforate deflecting plate resting upon said grid and extending outwardly beyond the outer edge of said lip, and a second ilnperforate heat deflecting plate supported on the first deflecting plate in spaced relation'to the lat- 10 her and extending outwardly beyond the outer edge of the fir st heat deflecting plate.

EUGENE ELTON WANN. 

